نتایج جستجو برای: fall

تعداد نتایج: 71267  

2002
Bin Chen Miao Li Feng-Li Lin

In this paper we compute the radiation of the massless closed string states due to the non-vanishing coupling to the rolling open string tachyon with co-dimensions larger than 3, and discuss the effect of back reaction to the motion of the rolling tachyon. We find that for small string coupling, the tachyonic matters remain in the late time, but it will completely evaporate away over a string s...

1998
Wu-Sheng Dai Xiao-Gang He Gang Zhao

The light quarks inside B mesons are usually treated as spectators and do not affect the decay rates which are assumed to be purely due to b quark decays. In this paper we calculate the non-spectator contributions to inclusive charmless B decays due to the spectator effects. We find that the non-spectator contributions to the branching ratio for B̄ are small (< 2 × 10), but the contributions to ...

1997
Hitoshi Yamamoto

In the decay of Υ(4S), the decay time distribution of Υ(4S) → f + X, where f is a final state that both B and B 0 can decay to, is the sum of the decay time distributions of B → f and B → f . Using this general rule, we estimate the sensitivity of single lepton CP violation measurements with respect to that of traditional di-lepton measurements. We find that the sensitivity of the single lepton...

1998
ALESSANDRO D. A. M. SPALLICCI

A novel method for calculation of the motion and radiation reaction for the two-body problem (body plus particle, the small parameter m/M being the ratio of the masses) is presented. In the background curvature given by the Schwarzschild geometry rippled by gravita-tional waves, the geodesic equations insure the presence of radiation reaction also for high velocities and strong field. The metho...

1997
Hitoshi Yamamoto

We estimate the sensitivity of single lepton CP violation measurements with respect to that of traditional di-lepton measurements. We find that the sensitivity of the single lepton method is better than that of the di-lepton method. The achievable sensitivity with the currently available data is already in the range relevant to standard model predictions. We also give general expressions for in...

2005
S. Cowell

S. Cowell Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA (Dated: December 6, 2005) The modern theory of neutrinoless double beta decay includes a scaling factor that has often been treated inconsistently in the literature. The nuclear contribution to the decay half life can be suppressed by 15-20% when scaling factors are mismatched. Correspondingly, 〈m...

2017
Matthew Lee Smith Ellen C. Schneider Imani N. Byers Tiffany E. Shubert Ashley D. Wilson Samuel D. Towne Marcia G. Ory

Although the concepts of systems change and sustainability are not new, little is known about the factors associated with systems change sustaining multi-state, multi-level fall prevention efforts. This exploratory study focuses on three State Departments of Health (DOH) that were awarded 5-year funding from the Centers for Disease Control and Prevention to simultaneously implement four separat...

2010
Ira Diethelm Christina Dörge

For classes in informatics it gets more and more important to develop a sustainable curriculum because computer technology and its related items are subject to frequent changes. This leads to the problem that the content of informatics courses suffers from fast decay time. And to make things worse: What we are teaching our pupils and students is far from sustainable knowledge. The scientific co...

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